Glooschenko W A, Strachan W M, Sampson R C
Pestic Monit J. 1976 Sep;10(2):61-7.
Samples of water, seston, and sediment from the upper Great Lakes were collected during the summer of 1974 for analyses of polychlorinated biphenyls (PCS's), 15 organochlorine pesticides, and 17 organophosphorus pesticides. Samples were taken from 9 sites in Lake Huron, 2 in the North Channel, 5 in Georgian Bay, and 17 in Lake Superior. In the water samples all compounds analyzed were below quantification limits and traces of lindane were found in each sample. In seston samples, PCB's were above quantification limits at nearly every station and some traces of dieldrin and DDE were measured. Sediments contained PCB compounds at all stations. Dieldrin was occasionally observed, and DDT and/or its derivatives DDE and TDE were found in over one-third of all samples. No clear correlation was found between quantities of these compounds in sediments and either the percentage of clay or organic matter in the samples. Nor were any definite geographic trends present in terms of distributions observed, although concentrations were higher in areas of higher sedimentary deposition such as deeper basins. No organophosphorus compounds were detected in any sample. The highest level of DDT residues detected, 20 ppb, was lower than levels found in other studies in the lower Great Lakes and some tributary river sediments of Georgian Bay. In general, DDT residues were higher in Lake Huron and Georgean Bay sediments than in Lake Superior although PCB's were higher in some Lake Superior sediments.
1974年夏天，采集了五大湖上游的水样、悬浮质和沉积物样本，用于分析多氯联苯（PCBs）、15种有机氯农药和17种有机磷农药。样本取自休伦湖的9个地点、北通道的2个地点、乔治亚湾的5个地点以及苏必利尔湖的17个地点。在水样中，所有分析的化合物均低于定量限，且每个样本中都检测到痕量林丹。在悬浮质样本中，几乎每个站点的多氯联苯都高于定量限，还检测到了痕量的狄氏剂和滴滴滴。沉积物中所有站点都含有多氯联苯化合物。偶尔会观察到狄氏剂，超过三分之一的样本中发现了滴滴涕和/或其衍生物滴滴滴和滴滴伊。沉积物中这些化合物的含量与样本中粘土或有机物的百分比之间未发现明显的相关性。在观察到的分布方面也没有任何明确的地理趋势，尽管在沉积量较高的区域如较深的盆地中浓度较高。任何样本中均未检测到有机磷化合物。检测到的滴滴涕残留最高水平为20 ppb，低于在五大湖下游其他研究以及乔治亚湾一些支流河沉积物中发现的水平。总体而言，休伦湖和乔治亚湾沉积物中的滴滴涕残留量高于苏必利尔湖，尽管苏必利尔湖某些沉积物中的多氯联苯含量较高。
